Lifting truck



c. R. FAGIN LIFTING TRUCK Dec. 27, 1932.

Filed Feb. 4. 1928 t M w N l 1N AN m y Nl; T, w f WIA. 1.. r i: 4/

@@ZM. W7

QN @N Patented Dec. 27, 1932 UNETED STATES Parser esterna CHARLES RGLANDFAGIN, OF GIIICINNATI, OEO, ASSGNOR, BY iIESIIE ASSG'NI'vi-NTS,

TO THE YALE 6c TOWNE )MANUFACTURING GGMPANY, Ol STAMEQRD, CSNNECTICUT,

A CORPORATION F CONNECTICUT LIFTNG TRUCK Application led February 4,1928.

rEhis invention relates to lifting trucks. It is an object of theinvention to provide a truck having a spring supported load engagingfra-ine which is of particular service in transporting goods of fragilenature in order to reduce the liability of damage.

Other objects and advantages of the invention will appear hereinafter.

A preferred embodiment of the invention selected for purposes ofillustration is shown is the accompanying drawing, in which,

Figure 1 is a top plan view of the truck, and

Figure 2 is a side elevation.

Referring to the drawing, the truck illustrated is of the type describedand claii ed in a copending application of William Stuebing, J r.,Serial No. 207 ,47 0, filed July 21,1927, which is now Patent No.1,750,289 dated March 11, 1930, and comprising a main frame 1 and anelevating frame 2 pivotally connected at its forward end to the mainframe by means of links 3 and pivotally connected at its rear end to themain frame by means of links 4. The lifting mechanism illustrated is ofthe type described in the aforesaid copending application, and comprisesa lifting member 5 pivotally mounted at 6 on the steering lever 7 and amember 8 secured to the olevating frame presenting surface 9 preferablyarcuate in shape for engagement by the hook portion 10 of the liftingmember 5. Thus when the steering lever 7 is swung to vertical position,the hook 10 of the lifting member 5 may be caused to engage the surface9 by depressing the treadle 11, and by swinging the steering lever in avertical plane, the elevating frame may be raised in the usual manner.

ln order to hold the elevating frame in raised position a hook member 12is secured thereto in position to be engaged by a hoch member 13pivotally mounted on the main frame. By pressing the treadle 141- theengagement between the hook members may be released and the elevatingframe is permitted to return to its lowermost position. lf desired, ahydraulic check 15 may be provided having one member connected to themain frame and another member connected to the Serial No. 251,771.

elevating frame in such manner as to retard the descent of the elevatingrame.

y A thirdframe 1b, which may for convenience be called the springsupported frame, is

piv'otally connected to the elevating frame 2 Preferably the springsupported frame is somewhat larger than the elevatiuo` frame in r i "n Dorder that the spring supported frame may be depressed with respect tothe elevating frame in telescoped relation therewith. Also preferably,the spring supported frame may 1 be flared outwardly to form the wings19 within which the springs 20 may be conveniently housed. ln order tohold the springs 20, members 21 may be secured to the elevating frameand members 22 may be secured to the spring supported frame, the spring20 being adapted to be compressed therebetween b v reason of the weightof the spring supported frame itself and the weight of whatever load maybe carried thereon.

As will be apparent, as the elevating frame is raised, the springsupported frame will also be raised and, assuming that the truck hasbeen inserted beneath a load supportinc` platform, the spring supportedframe vill eventually engage the load. As the elevating frame continuesto be raised, the springs 20 are gradually compressed until thecompression of the springs is sufficient to carry the loa-d, at whichtime the load will be lifted clear of the ground. Thus, after theelevatinc' frame has been raised to its uppermost position, the loadwill be resilient-l;VY supported during the movement of the truck fromone place to another. Furthermore. when the treaflle 1st is dei essed topermit the i tc be lowered, the re-engagement of the load springplatform with the ground will be accomplished ver),v gently` for thecompression on the springs 20 is relieved gradually after engagementwith the ground is edected.

scribed as applied to a specific lift trucln it may also be applied tovarious other types of trucks Within the scope of the invention.

It Will also be understood that thel invention may be variously modifiedand embodied Within the scope of the subjoined claims.

I claim as my invention l. ln al lifting tru-eli, a main frame, an elevating frame, a spring supported frame, a plurality of links pivotallyconnected to said elevating frame and said spring supported frame toconnect the latter to the` former7 and lifting mechanism on said mainframe to lift said elevating frame and said spring supported frame.

2. In a lifting truck, an elevating frame, a spring supported loadengaging frame, and Connecting means between said frames. adapted tolimit the extent of relative vertical movement therebetween and toretain the said frames in substantially parallel relation ship.

3. ln a lifting truck, an elevating frame, a load engaging frame,connecting means between said frames adapted to limit the extent ofrelative vertical movement therebetween and to retain the said frames insubstantially parallel relationship, and resilient means interposedbetween said frames and adapted to transmit the load from the loadengaging frame to the elevating frame.

el. In a lifting truck, a main frame, an elevating frame, a loadengaging frame spring supported on said elevating frame, means mountingsaid load engaging frame for limited end-Wise movement relatively tosaid elevating frame, and lifting mechanism on said main frame adaptedto lift said elevating frame and said load engaging frame relatively tosaid main frame.

5. In alifting truck, a main frame, an elevating frame, a load engagingframe mount-- ed on said elevating frame ivhereby the load is lifted bythe elevating frame through the intermediary of the load engaging frame,said load engaging frame being pivotally secured to said elevating frameand adapted to move pivotally on said elevating frame When subjected toa` load, and resilient means for resisting said pivot-al movement.

(i. In a lifting truck, a main frame, an elevating frame, a loadengaging frame mounted on said eleva-ting frame whereby

